Spring motor



'F. c. JONES SPRING MOTOR Filed Nov. 25, 1922 2 Sheets-Sheet l Wl T/YESS sept. 22, 1,925. 1,554,435*

F. C. JONES SPRING MOTOR Film Nov. 23, 192x 2 sheets-sheet 2 Patented Sept. 22, 1925. I

UNITED Asm'r'ls FREDERICK c. JONES, OE OAMDEN, NEW JERSEY, AssIGNOE'frOjvIcTOE Y'rALIrIlvef MACHINE COMPANY, A CORPORATION OF `NEUV- JERSEY."

SEEING MOTOR. f

Application filed November 23, 1922. jSerial No. 602,696.

To all whom t may concern V Be itvknown that I, FREDERICK C. JONES, a citizen of the United States, and avresident of Camden, in the countyuofl Camden and State of New Jersey, have inven'tedcertain new and useful Improvements in Spring Motors, of which the'following is a specication. i

My invention relatesto ,spring motors and more particularly to the construction of the individual barrels or spring4v containers of a --talking machine motor in which are mount-V ed the spiral springs by the compression of which energy for imparting motion to the motor is stored. f s

The spiral springs of a spring-motor for a talking machine are usually enclosed -within a casing or housing, and the space within this casing, not occupied by the springs, is usually filledA with arather thick or heavy lubricant. As the coils of the spring contract, during the winding operation, they squeeze the lubricant out from ,between them, and as the coils subsequently expand `flow back into the space between, the coils.

Then two Yor more springs are containedA within a single casing they; are'gusually, farranged quite closely side'by side in Order to make the motor structure compact, but when so arranged, they tend to prevent, to a con' siderable extent, the radial vflower circulation of theV grease in the barrels as.v the 1 springs are wound and unwound.' The ez(-4 dividedV into a plurality "of substantially closed compart1nents,on e `for each spring, the division being effected by the interposirator snugly tittingaroundV` the Winding "shaft passing therethrough, fitting Aaga-inst the interior of the casing orV housing, and titting against the edges ofthe springson each'v sidethereof; to provide; 2t-separator they displaceV the lubricant, causing itrtoA terior oft-he casing or .housing otamultiplespring barrel of a talking machine motor 1s;

tion between adjacent springs of a 'sepaf havingwithin ,it suitable v,passages for the radial Aflow of a' lubricantA therethrough,V rwhereby the lubricant, foreach spring is forced' to vcirculate Withinits chambreroutfwardly radially as thespring isv being Wound, and inwardly radially as the spring expands, said partition being so close to the Aedges of thecoils that grease squeezed out Y rom-l between adjacent convolutions ,move .radially toward the cylindrical surface of said-barrels, and when the grease enters betweenV Vadjacent coils of an expanding or unwindingfspring Amust move radially to- .wardthe axis of the barrel# A ,i j. A further object of my invention isto so secure the outer end of a springlin a spring lbarrelthat the hook-platey does notv forma hump or projection over which the coils must l slide or bend in Winding` andunwinding. Such a. projection tends to produce an unf even, irregular motion inthe coils as they unwindfcommonly known vas .jurnp The object of m'yinventionisto lprovidea hookplatel which does not interfereWithV the Ainsertion or. withdrawal of aicircularjsepar i rator vplate .into or from the barrel, saidA separator plateV being of the same ydiameter .as A. the cylindrical portion of lthe .barrehlitting .against the interior of said barrel, and/diments.,. i c. 'f f A furthergobject of' my inventionisfto provide. a housing or casing.Y for the.k springs ota spring motor, rwith ahoOk-plate. so. con?V Vstructed and` arranged'that theangles which Ithe 'outer' ends ofthe springs makeV with the housing or casing may vary:within wide limits, between fullyrwound andrun-down Vcondition, withoutV beingV subjected to transverse strainstendingto breakthesprings.l

.A vfurther vobject of. my `invention is' to attach the outer end of a spring to a spring' `viding it into,substantially closedgcompartbarrel in suchv away that Ythe said outer end) f'mayturnor rock freely'on -afulcrum edge as Onv-a knife edge bearing 'as it winds and. kunwinds, and to so locate and d isposethe plate which provides ,this fulcrum that-'it moval of a separator between vadjacent coil springs inthe barrels. i f

.,provide a hollow or chambered separator. for the springs in a spring barrel,` vvhichfris adapted to ffit fairly closely between a'dja- '.centcroils, willprovide al magazinejor reser"` "A further object of my invenfOIl- YSVO `v to each other, and from the periphery. to-A ""The'motor show'nfin the drawings pret#- gthe'centergfthe,'casing toward-the periphery thereof as.thefsprngsarebams roared-.,

and the convolutions are being drawn close ward the central part of the barrel when the springs are unwinding andthe co'nvolutions arenseparating from each other.

Other yobjects of my invention will appear thel specification yand claims below.

` Referrinvnow to the v.drawings rforming a part oii'tdiis specification, and in which the' sameV Yreferer'i'ce eharacters are used throughout Ithe various' views lto' designate thesame parts, Fig. 1 illustrates,rpartly in section, 'ai spring lmotor fembodyinguny lijnvention",*F'igr2 isa section on'lir'1eQ2'-2ofV Fig. 1 through the spring barrel. -Figt 3 is asimilar'section oirjlineB-B 'of Fig. i1;

' Figjfliisva -perspective view of the hook-l pflate by melansof'which the outer: ends of the springs are securedmtoi the spring ,bar-- rel or casing'. Fi'g. -5 kis 'a v'ievv similar to lFi-g. `1 'showing the springsv 'completely wound up. AFigi; 6 is 'a section on line G-:G

"olfFig', vFig; 7 aside view of a spring separator,v parts otonel outer l.plate a'ndfot rthe'fi'ntermediat'e pflategbein'g broken away 'to make, clearftheV construction and relation `of `:the .partsfofi the separatori; v'a-nd-i` ig. 8 'isf an LAend or' side viewfot Vthe pawland ratchet fshown'in Figsl x'and 5 for holding the winde fthe' hook-plate is similarly 'oise't; that; is

'ing shaft' from rotating` baclwardly.

erably comprises afbase plate `lr` from which "..dep'endsA-two arms, 2 and 3 respectively, 'the f bearings 4 Vand'f, sothat itfmayYV be longitudinallyw-ithdrawn `from 'said bearings when fdesired, lto remove thee'spring barrel, and

`mounted therein; from between the' arms 2'andB. i 'i i lv've'rioif which farei provided with cylin- 1 "dricalf bearings 4 and respectivelyfor a windingshaft 6. This shaft is preferablyof un'itornidiameter through 'and Abetween the Y' i ".On'e'fend of the winding Yshaft is `pref- 'erably provided 'with ya ratehet'7 which,l cor operating with vthe: pawl 8, and pivotally 'mounted lon the arm 2,- preventsthe rota-- '.tionfoff "the winding shaft-in one (unwindi ing) direction. 'v This ratchetf? is rigidly sen Y '21 'is secured in the bottom of therecess 20.

i cured 'to Athe 'head Io'fgtheshaft by a nut '9.

The outer` end 'of the -shaftv 6 -ispre't'era'bly Vprovided with a screw-threaded section 10 for VAthe att-ahment thereto 'of fa suitable Icylindrical Vshape with one end or head 12A iiiteg'ral therewith, said head Vbeing vpreff erably provided 'at its centerwith a'fconcentri'c holed-,13 into which Yis ittedand per# manently retained a cylindrical :Sleeve .14,

.to Ythe 'radius of the interior of forming a more extended- Abearing surface than is lafforded by tli'e'ithickness of the sheet Y ftherein by a spring ring 16 seated in a groove 17, substantially semi-circular in cross-section, in-the casing 11.

'The vcenter of thehead 15, like the head 12, is vprovided with a concentric holelS A head 15.

e he'springbarrel or casing 11 isY preferably provided with a substantially rectangular relativelynarrow. recess i2() pressed radially outwardly inwthe .cylindrical portion A thereof, v'extending substantially fthe length of the 'casing' parallel to` the axis thereof. vlVithin this recess-i20 is vrigidly secured a substantially rectangular: vhook- 'plate -21 conforming 'generally Ito kthe size Aand shape of the bottom of said recess,Y and having a narrow marginal oliset portion 22 along one edge thereof, "extending outwardly from 'the parallel Ato the 'bottom oit said ,recess from vone end ot said hook-plate to a point substantially "midway between `the into which isitted and permanently secured f ends fthe'reozt. The. opposite edge lor side of tosay, lthe said vplate-is .provided with a narrow marginalportion 23A spaced from Ithe bottom ofjsaid recess 'andextending longitudinally lparallel to :the 'opposite ledge 24'fand 25 respectively, which, when the said "hook-plate :is mountedwithin lthe recess 20,

-llieaentirely ywithin the recess, that is to say,

they do not approach closer -ornearer fto 'the faX'is of the 'cylinder' 'than ya ldistance 'equal creasing 11.

the cylinder I The hoolplalte'21 rmay be providedv with holes26, 26for the passage'therethrough of rivets A271-27,- 'by means ot which the plate '-igidl'ysecuredtofthe winding shait, byl a set-screw 28,'isamcylindrical 'sleeve 29 extending from the v,bearing 5 to'a'point nearly Y midwayv of the fsp'ring barrel Q11l and said 'spiral I'Ispring ,32. The outer 'end of saidV spr-l'ngfis also Ybent 'uponfitself outwardly fand rearw-ardl-y to forin alsha-rp or smallfang-le, straightsided hook f 33 which *isf adapted to take over the fulcrum edge 24 of" i shaft 6 therethrough.

the hook-plate 21, and rock thereon as on a knife edge bearing. Y'

Also mounted on the shaft 6 is another sleeve 34 extending from thel bearing 4 in the bracket 2 inwardly to a vpoint nearly half-way between the ends of the cylindrical casing 11 and this sleeve is also provided with a longitudinally extending grooveor slot 35 into which hooks thek bent-over end 36 of a coiled spring 37, the outer end of which is provided with a Asharp or smallangle straight-sided hook 38, adapted tor takeover the fulcrum edge 25 ofthe hookplate 21 and to rock thereon as on a knifeedge bearing.

Between the'head 12'of the spring'barrel 11A and the bearing 4, the sleeve 34 is prefer ably provided with a gear wheel 39, permanently secured thereto and adapted to engage land drive the usual worm on the vspindle of a turntable of a talking machine motor (not shown). It is to be understood, however, vthat this vgear 39 may be of any desired type and may be employed to drive any suitable gearing or mechanism.

The sleeve 14 in the head 12 and the sleeve 19 in the head 15 t respectively over and arerelatively free to rotate upon the outer surfaces ofthe sleeves 34 and 29. Upon these sleeves 29 and y34 the spring barrel 11 is thus free to rotate.v f

Between the Vspiral springs 32 and l37 and between the ends Vof the sleeves 29 and 34 is mounted aspring separator 40 shown in Vcross-section in Figs. 1 and 5, and in side elevation in Fig. 7. This'separator preferably comprises three plates, an inner plate 41, and two outer plates 42 and 43 respectively, all provided at their centers with alined concentric circular openings '44, 45 and 46 respectively for the passage of the Y The hole 44 in ,the inner plate, at least, should fit snugly around the periphery of the shaft 6,r as will be referred to'below.

The inner plate 41 is preferably flat and imperforate, except for the hole'44 atfthev center thereof, and the outer plates 41 and 42 are respectively continuously united to the inner plate on opposite sides thereof throughout their peripheral margins 47 and 48 respectively and throughout their central margins 49 and 5() respectively.

Between these united margins the outerl plates 42 and 43 kare pressed outwardly away from the inner plate 41, to form depressions 51 and 52 therein respectively, which serve to space the outer plates from the inner plate and to form annular chambers 53 and 54 disposed on opposite sides of the inner plate 41.y

v The outer plates `are also preferably provided with a circular series of holes or open` ings 55 and 56 respectively adjacent the unitedvperipheral margins 47 and 48 through In this way each plate is provided with series of openings into the vsaid, chambers near the outer and near the inner 4limits of said chambers respectively for the circula-k tion of a lubricant into, out of and through the annular chambers 53 andy 54.

Between the openings 55 and 57 .and be'v 'tween the openings 56 and 58, kthe outer faces of the outer plates 42V and 43 are flat and may lightly vbear against thel edges ofl the coils 'of the springs32 and :37, to prevent anyrsubstantial `lateral movement 'l of any of the `coilstoward eachother, and to prevent the grease or lubricant from merely flowing transversely back and forth from one spring to the other spring.

l/Vhen the springs are in the unwound condition shownin Figs.V 1,12 and 3, the heavy lubricant substantially lls the casingfand the space between the coilsV or convolutions ofthe springs, and as the winding shaft is turnedV the springs contract,'as shown'fin Fig. 6 and the adyacent convolutlionsV are yclose or in contact with' each other.""This operation squeezes the grease out/,fromv between the coils, and the grease, enteringthe central circular series of openings57 and58, flows radiallyrin the chambers 53 g vand 54 making its egress through the series of `openings v55 and 56'into the spacevbetween'the outer convolutions of the coils V32 and'37 near the innerwall ofthecylindrical casing 11. Y

Conversely, when the springs expand, the grease in the chamber 'between the youter convolutions'ofthe coils32' andr37 is forced through the peripheral ropenings 55 and'56,

flows radially inwardly through the chambers 53 and 54, and emerges through the Y central circular series of openings'57 `and k58, whence it enters and fills the'space between theinner convolutions vof the coils.

vvAny suitable portionof the inner br closed endof the barrel Vor casing v11 may be provided with means for replenishingA the casing with lubricant.` Thus, theh'ead'12 may be and preferablyis provided` with an o'pening' in whichy is secured a nipple 59 closed by .a cap 60.`

As vhasbeen above described, the vouter ends of theV spiral springs 32 and v37.l arev Vprovided with hooks V33 "and 38, preferably vformed by bendingwthe outerv ends.A of the Vsprings"outwardlyand rearwardly and at suchjvai'i angle Vas Vtov forin straightsided, small-angled hooks'. The fulcrum edges'24 ,and 25 are arranged to engage respectively into the bottom of the angles of the hooks Y ing .shaft r6, the `shaftis turned in a clockatthe'ends of thesprings. l Byreference to `14igs-w'2. and 6 itWillbe observedthat asthe springsv areuvvound or. unvvound, the hooks Bfiand 38 Will rock on 'the fulcrum edges f 24. and V25, to permit the .endlof the spring y.adjacent theretoto make its normalangle anywhere between fully Wound and fully vunWounoll positions. vWithout limposing upon .the vSpring. any (additional ltransverse presl surev or strain tending to brealr it vor bending ,thefendjof the hook by reason of any en- -gagement.of it with .the bottom of t-herecess. VThe ends of the springs arelperfectly lfree to rock on the fulcrumedges 24 and ,25. and .,Wlrenrthe springs `,are fully .unwound .the .endsof--the .springs Eadjacent gthe hooks are :"freetof1 assume the cnrvatureot the inside @of the Cylinder'at'the ,point Wheretheyx are attached. to the. hooks. Theends of the yhofolsts 33. andBSare preferably ,just out .of contachwith the. .bottom of the .recess 2O .when the*springis lfully unW'ound, and are justout of ,contacta/ith the inner surfaces i.of 2the yoffset marginsv 22 and 23.When the .,.springsare fullywvound. rlhe ends ofthe hook-.plate Hdo not .pr-ojectinto the cylin- Hdrical .portion of y.the casing' but the underside. of .thepvfl'set margins 22 and y23 preferably. lsubstantially. .coincide with, the Acurve tof vthe.cylindrical. lcasing yor are disposed A.targentially thereto. p

i lVhile .the depression or recess 2O haslbeen ,.described as substantially rectangular itwvill ,Iba-observed yfrom Figs.` 2 3 and@ that the 4,.tric Withigthe axis .of ythe cylinder and that A.the-Walls fthereof .preferably flareslightly .along the longitudinal sides. thereof. The ..Ihookepglatelalso has .been ...described as lsabstantially rectangular in shape, but that. also Vis preferably. slightly curved so. that that portion thereofwhich is not pressed ,toiorm l the marginal.olisetportions 22 :and 23.is;of vv`the same curvature vas 4that of the bottomof Y the .recess .20..so that when the -hookplate is ...riveted into .therecess it squarely rests on the bottom thereof.

' rlIhe 1 operation ot .the .motor is briefly as -follovvsz A Winding key o r crank haying .been .threadedover the'end 10j of the Wind- .avise direction, the ratchetV Tand .the pavvl 8` permitting., of such movement.V The Winding. shaft. 6 turns. vin the bearings 4vand 5 of the :base plate. l, Aand the sleeve 29, made fast to thewindin'g shaft 6 by the set screw .28 rotates therewith. The. spring 32 is `:.-Wonndzup from .the inside, outwardly vby `this:rotation of the sleeve2Q-because of .the .engagement 4ofthe bent-.over end l31 with .the slot 30 and whenv the y.tensionfof .the

spring-has ...become sulcient `to do. so, ,the .spring.l will, .begin to dragywith. .it1 .theV cylindrical .casing ll because .of/the .engagebottom thereof is :preferably vmade concen-VV .ment of the hook v24 With the offset niargin. 22v of the hook-plate. 'Asthe cylindrical casing 11 continues tov be thus rotated, it

putsthe :spring 87under tension,- Winding it from `the ontsideinwardly, the hook 38 being in ,engagement .with the. oglset margin 23 or' thehook-plate andthe inner. end beingl ,in engagemen'twith the slot 35pm the sleeve 34. f 'This sleeve 34ca1ries ,with .it 'the gear `Wheel 39 .l which. is normally in engagement with thenvorm ony the :turntable spindle (not Shown)4 @dint-.111s classi 0f motors, the sleeve andthe gear heel 39 Willnot rotate When'4 I'the turntable or other mechanism which is adapted to be driven by the gear 39 is locked or held immovable as by a `.brake Y against the peripheryA of the turn table. VjThe continued rotation of .theshaft Glin- Winding. then will vput both springs under compression, the Ispring v32Vv being kWound from the inner endoutvvardly, `the .spring 37 from the outer end: `inwardly, until they are `both coilednup *tightly about their respective bushings29 and 34 respectively, When the springs are `:fully vvound upthe paWl 8.xengaging with the vratchet '7 will prevent the` movement .of .ther Winding shaft vvin the reverse direction.

Conversely., when. theriotor .is

Y used to rotate the 'mechanisnrt'he gear .39 vis free toA revolve andV the yspring 37y Will' begin toun- Wind from the centenoutvvardly rotating the sleeve 34.011 theln'oyv Ystationary Winding shaft 6,* and as this 'gs'pring-unwinds the vcaswill 1slowly moye in; a lclockwise direction under thea'ction ofthe spiralspring 32 which Will unwind from the :outside `in- .With the vshaft 6. I

Thus,i during .the operation of themmachine, the springs; alternately substantially simultaneously expandvand contract forcing Ithe greasefi-n their` respective cha-1ny bers or .compartments to flow radially-fin- Wardlygduring Athe expansion of..the springs and loutwardly during the. compression'. .of i the springs. J

The grease is prevented front flowing from one` compartment to the other by the i solid imperforate partition .platen 4l but-.it ,is free toA circulatev Within its own compartment' through ythe"a1,i,nu.l:ar .lchambeii and open'ingsvin.,thevseparator on-gits side of the innerplate. Y Y p `The*disposition of thehook-plate 21 With-y in the recess ,20 is such that-in the assembling of the springslvvithin the casing With the separator plate between `them,..fand Iin .the withdrawing. of the springs fronrthe V casing as, for idnstfance` forV the purposey of Wardlyl, the bushing 29 lbeing held stationaryy ,replacing a broken .spri'ng,` the separator tion or the removal of a separator plate, of of the interiorlof the same diameter as that the cylindrical casing. It is desired to make it plain that preferably the lubricant is at rst-introduced into the spring barrelv during the assembly of;

the same. One spring withv its bushing is first put into the barrel, and then a quantity of grease Yor lubricant suflicient to substantially fill one-half of the casing, is placed therein. The separator or magazine having both chambers therein previously filled with lubricant in any suitable manner, as by a squirt or grease gun, is then inserted within the barrel. The second spring with its bushing is next placed in the casing and grease sufhcient to now substantially lill the casing is introduced, the head is then 'in- Serted and held in place by the spring ring 16, whereupon the barrel isfready for assembly in the motorframe.

To replenish the barrel from time to time with lubricant as it may Abe found ,necessary or desirable to do, the assembled'casing may be removed from the motor, taken apart and refilled withtlubricant in the manner above described in' originally assembling the barrel. I prefer, however, to' provide any accessible portion of the inner end of the casing with a nipple 59 normally closed with a plug orcap 60 for the attach- `ment thereto of a grease gun for the purpose of replenishing the spring barrels with grease without necessitating the demounting of the motor. I/Vhile my improvedfhook-plate yis particularly designed, arranged and mounted within a recess in the interior'of the'cylin-- der in such a way as to permitl a springy separator of the same size and shape 'as the interior of the cylinder to' be inserted therein to keep separate thecoils-ofladjacent springs, it is not to be 'ccnstrued-asuseful only in such association, because in addition to being useful in connection with the. insertion and withdrawal of the separator, itv allows the end of the Spring'attached thereto a perfectly free rocking movement thereon as the spring coils and unco-ils, and consequently the greatest amount of contraction and expansion of the'spring Without subjecting the said end of the spring to anyv exterior transverse strain. For these purposes, therefore, a single hook plate, consisting of one-half of the double hook-plate shown in Fig. 4 of the drawings, is eminently adapted for use in single spring barrels, wherein the separator plate vmight-notbe needed, and the other advantages of my in-y vention desired, without departing from ythe spirit and scope of my inventionand the appended claims.

Having thus described my invention, what',

I claim and desire to protect by Letters Patent of the United States, is: A

1. In a spring motor, the combination of ay closedv substantially ycylindrical .casing having a longitudinally disposed recess. inv the inner surface thereof, a hook-plate seat- 'ed in said recess andhaving fulcrum-edges. von opposite vsides thereof odset from the bottom of said recess'but locatedno nearer the axis offsaid cylinder thanthe radius of the interior of said cylinder, a shaft passing through saidcasing, a pair 'off `oppositely wound springs providedat their outer ends with straight-sided, small-angle hooks j to respectively take over 'and rock onthe' fulcrum edges of lsaid hook-platex-as on" knife-edge bearings as said springs wind:

and unwind, and a separator insertable into said casing between said springs clear of4 said hook-plate fitting around said shaft and against the interior ofvsaid casing, dividing saidr casingy into two Ysubstantially-fclosed compartments one foreach'spring. Y

2. In a spring motor, the combination of a closed substantially cylindrical casing having a longitudinally disposed recess in the inner'surface thereof, a hook-plate seated in said recess kand havingv fulcrum edges onopposite. sides thereof offset from the bottom ofv said recess but located no nearerv the axis of said cylinder than the radius of the interior of said cylinder, ya shaft passing through said casing, a pair of'oppositely wound springs provided at their outer ends with straight-sided, small-angle hooks, to respectively take over and rock on the fulcrum edges of said'hoolr-plate Lasv onlrnifeedge bearings as said-springs wind and unwind, and a separator insertable into said casing between said springs clear of said hook-plate yfitting around said shaft .and

4against the interior fof said-V casing,"divid ing said casing into two substantially closed compartments one'for eachspring, saidv partition havingV a passagel therethroughfor the relatively freeradial movement of the lubricant therethrough as said spring winds and unwinds.v

I In a spring motor, the combinationro-f a closed substantiallycylindrical 'casinghavi. ing a longitudinally disposed vrecess in `the Y inner surfacethereof, a Ihook-plate seated in said'recess and having fulcrum edges on vopposite sides thereofl oset from the bottom of said-recess but located no nearer theaXis of said cylinder :than the radius of the interior of-.sa-id cylinder, a shaft n passing through said casing, `a pair of oppositely Wound springs provided at=theirouter ends with straight-sided, small-'angle hooks to respectively take over and rock on the fulcrum bearings as said springs wind and unwind, anda separator insertable into `said Casing between said springs clear of said hook-plate fitting aroundA said shaft and against the interior of said cas1ng,dividing.said casingA into vtwo substantially closed compartments one'for each spring,l said partition having a passage therethrough for the relatively free radial movement of the. lubricanttherethrough as said springvvwinds yand unwinds, said partition being also operative` to prevent the 'How of liibricant-between thel coinpartments on opposite sides thereof,

' 4; Indra spring motor, the combination'of aclosed substantially cylindrical casing havin'g a longitudinallydisposed relatively narrow recess pressed outwardly in the inner cylindricalv surface thereof, a hook-plate seated in said recess and secured to the botto'rn thereof 'and' having fulcrum 1 edges on opposite sidesthereof offset from the bottom of said `recess' a distance no greaterthan the'depth of saidv recess, a "shaft passing through said csaing, a 'pair of oppositely wound'sprin'gs' provided at their outerends with straight-sided, small-angle hooks to respectively take over and rock on said fulcrum edges ason knife-edge bearings as said springs wind and'un'wind', and a disk-like separator insei'tableinto' said casing, dividing-said casing into two substantially closed compartments,'one'for each spring, said partition beingfoperative `to prevent the flow oflubricant fromv the coinparthientbn 'one side thereof to the compartment on the other side-thereof.

5. ln a spring motor, the combination of a substantially cylindricall sheet metal cas# ing' closed =atene end' by an integral 'circular head and at the other 'end by a removable circular head, sai'dheads being provided with cent'ral icircular openings'- therethrough, a shaft mountedooaxiallyxwith said cylinder passing ath'ro'ugh saidbpenings lin/said' walls,l said 'casing vhaving .a substantially rec-y tangular' recess pressed radiallyoutwardly in the cylindrical portion theredf'enteiiding substantially the length 'of 'said' 'casing '-par# allel to the axis thereof, a hebk-plate of .sheetinetalrigidly secured; to land' of substantial'lyztlie sizeuand shapefof the botl toin of said recess, said /platehaving a nari row finargi'n'a'l "pjor'tion offset from the bottom of said reces'seirten'ding` longitudinally from one'end 'offs-aid plate to a point substantially midway between theends thereofV and hav/- ing a lilre'nariow marginal port-'ion siin'ilarly offset and vei'rtending longitudinally of said plate'fro'm the opposite end-*onthe oppositie' side of Vvsaid plate t'o Ja point -midway between the endsof said plate to forni"-*oppositely'extending fulcr'tim edges' located entirely within said recess, a pair of helical springs oppositely wound mounted within said casing and provided at their outer ends with straight-sided, small=angle hooks respectively taking over said fulcrum edges,-and a circular partition between said springs dividing said casing into two substantially'closed cylindrical compartments. Y y

6. yIn a springl motor, the combination of a substantially cylindrical sheet metal casing closed at oneend by'an integral circular'y head and at thev otherv end by a removable circular head, said heads being provided with centralv circular openings therethrough, a :shaft mounted coax'ially with said cylinder passing through'said' openings in said walls, said casing having' a substantially reco tangular recess pressed radially outwardly in the cylindrical portion thereof Aextending substantially the length; of said casing parallel to thek axis-thereona hook-platev of sheet'metal rigidly secured to and ofI substantially the size and shape of the' bottoni of saidrecess, said plate .havinga narrow marginal portion offset from the bottom of said recess extending'longitudinally from one end of said plate toa point substantially midway between the ends thereof and having; a'lile narrow'marginal portion similarly' offset and extending longitudinally of said plate from the oppositeend on theopposite side of said plate toa point midway between the ends of said plate to form 'oppositely extending fulcrum edges ylocated entirely within 'said-recess, a pair of helical springs oppositely wound mounted within said casingand provided at their outer ends with straight-sided, small-angle hooks respectively taking over said fulcrum edges, and a circular partition having Ya concentric hole thereinfitting'around said shaft, dividing the interiorv of said casing into two substantially closed compartments one foreach spring, having a passagetherethrough yfor the free lradial movement' of lubricant each chamber' asl the Vspring therein winds and unwinds,fand reventingI theV flow of lubricant fromv one *chamberv to the other chamber.

7511i a spring 'linotor thecombination of a substantially cylindrical 'casinggclosed at both 'endsand provided with a longitudinal recess inv the interior thereof,v a hook-plate rigidlyrsecured within. said r 'cess and presenting a straightnarrow edge 'offset from the bottom of saidrecess but entirely within said recess, a winding-shaft passingfcoaxially through vsaid-`casing,a spring within said casing having one end in operative engagement with said shaft 'and the other end bent outwardly "and-freafrwardly to form an integral sharp vangle hookv thereon arranged to'enter said recess, hook over said edge of said `hook-plate',4 and Afreely rock' thereon as said spring winds `and u'nwinds.

8. In a spring motor, the combination with a cylindrical .barrel having a longitudilli spring and a sharp-angle hook on the outer end thereof adapted to hook over said fulcrum edge and freely rock thereon as on a knife-edge bearing as said spring coils and` uncoils.

9. In a spring motor, the combination of a cylindrical barrel having a longitudinal recess `in the interior thereof, a hook-plate seated in said recess and secured to said barrel, said plate presenting a fulcruin edge off i set from the bottom of said recess-a distance not greater than the depth of said recess and extending parallel to the axis of said cylinder, and a helical spring having its outer end bent outwardly and then rearwardly to form an integral sharp-angle hook thereon adapted to hook over said fulcrum and freely rock thereon as said spring coils and uncoils. Y a

10.*In a spring motor, the combination of a cylindrical barrel having a longitudinal recess in the interiorv thereof, a hook-plate seated in said recess and secured to said barrel, said plate having on opposite edges offset margins presenting fulcrum edges spaced from' the bottom of said recess a distance not greater than the depth of said recess and extending parallel to the axis of said barrel, a pair of oppositely wound helical springs having on their outer ends respectively sharpangle hooks adapted to hook over said fulcrum edges and freely rock thereon as said springs coil and uncoil, andlaseparator engaging the interior of said barrel and disposed between said springs to divide the interior of said barrel intov two substantially closed compartments, one for each spring.

11. In a spring motor, the combination of a. cylindrical barrel having a longitudinal recess in the interior thereof, a hook-plate seated in said recess and secured to said barrel, said plate havingon opposite edges Oifset margins presenting fulcrum edges spaced from the bottom of said recess a distance not greater than the depth of said recess and extending parallel to the axis of said barrel, a Y

pair of oppositely wound helical springs having on their outer ends respectively sliarp-angle hooks adapted to hook over said fulcrum edges and freely rock thereon as said springs coil and uncoil, and a separator engaging the interior of said barrel and disposed between said springs to divideA the interior of said barrel into two substantially v closed compartments, one for each spring,

said separator having therein separate passages for the radial iiow of a lubricant therethrough as said springs wind and unwind.

12.,In a spring'motonthe combination of a cylinder having a longitudinally extending recess pressed radially outward therein, a hook-plate secured to the bottoni of'saidrecess and having an offset margin spaced from the bottom of said recess, and wholly within said recess, and a spiral spring housed within said cylinder, having itsouter endA provided with an integral hoolrhaving straight diverging sides hooked over the offset edge of said plate wliereby'said hoolrmay freely rock on said edge as on knife-edge bearings as said spring winds and unwinds 13. A hook-plate for securing a spring of' a spring motor vto a casing or barrel com-V prising a substantially rectangular. plate of sheet metal having a narrow marginal p0r-` tion offset from the body of Vsaidplate, extending longitudinally rfrom one end of said plate to a point substantially midway between tlie ends thereoffand a like narrowV marginal portion similarly offset and ex-. tending longitudinally .from the opposite side ofv said plate to'a point substantially midway between the ends ofsaidplate to form `oppositely extending fulcruin f edges extending substantially'half-way across -op-L posite edges of said plate. f

14. A separator for the springs of a spring motor comprising an inner plate and two outer plates all .circular and all vprovided at their centers vwith alined openings for the passage offa shaft,.tliei'etlirough, said inner plate beingfiiat and imperforate except for said opening 'through the center thereofand said outer plates being continu o'usly united to said inner plate on opposite sides thereofrespectively. at said peripheral and central margins, said Vouterrplates being spaced from said inner plate between their peripheral and central margins to provide annular chambers on opposite sidesof said inner plate, each outer plate beingV provided adjacent the peripheral margin thereof with an opening leading into the chamber between it and said inner plate and adjacent the centi-al margin thereof with a second opening also'leading into the chamber between it and said inner plate. A, 15.A separator for the springs of a spring motor, comprising a flat Ycircular* plate having' a central concentric opening therethrough, a second circular plate having an offset peripheral flange tightly united to the peripheral margin of a face of said flat plateand forming a chamber between said plates, said second plate having an opening therethrough near the said peripheral flange leading into said chamber and having an opening therethrough near the central limits of said chamber. 1

16. A separator for the springs of a spring mot-or, comprising a plate having an Y opening therethrough for the passage of ka shaft, and a second plate having an offset plate, said second plate having a central opening therethrough and an oliset central flange adjacent said opening also secured tosaid face of saidilat plate whereby an annular chamber is formed between said plates, said second plate also having openings therethrough respectively near the outer 'and inner limits of said chamber to providepassages leading into said chamber.

Y18. In a spring motor the combination of a closed spring casing, a shaft passing therethrough, a pair-'ot springs having their outer ends hooked tosaid casing and a parti tion member between said springs litt-ing around said shaft and against the interior of said casing dividing it into separate substantially closedcompartnients one for each spring, said partition having passages therethrough for Athe relatively free radial move-` ment of the lubricant in said compartments as the springs therein are being wound and unwouiid, said partition being also operative torprevent Athe flow ol' lubricant from one compartment to the other.

19. In a spring motor the combination of a closed spring casing, a spring vcoiled there-V in', and means for conveying lubricant from the inner to the Vouter coils of said spring, and vice versa.

20. In a spring motor the combination of a spring casing, a spring coiled therein, and means for conducting lubricant between the inner and outer coils 'oic said spring as said spring is wound up and unwiiids.

21. In a spring motor the combination of a spring casing, a pair oie springs coiled therein, and means for separating said springs and for conducting lubricant be-A tween the inner and outer coils of each spring. Y

22. In a spring motor the combination of a closed spring casing, a spring coiled therein, and means cooperating with said casing to torni a chamber for said spring and having a passage' therein to transfer lubricant back and forth between the inner and outer coils of said spring.

23. In a spring motor the combination of a closed siliring casing, a pair of springs coiled therein, and hollow'means separating said springs and providing a separate magazine tor lubricant for each spring. l

'2a. In a spring motor the combination of a closed spring casing, a spring` coiled therein, and means engaging the side of said,

spring' and providing a passage Jfor effecting a transier 01"' lubricant from the `aXis of said casing to the periphery thereof and vice versa.

a spring casing, a spring` coiled therein, and means forming a partition in said 'casing and providing a passage through' which lubricant is transferred from the inner to the outer convolutions of said spring and vice versa as said spring is being wound yand unwinds. f

In witness whereof, I have hereunto 4set my hand this 21st day of November, 1922.

riiiiniiiiicir o; Joisiiis.

In a spring motor the combination of Certificate ef Correction.

It is hereby certed that '1n Letters Patent No. 1,554,435, granted September 22, 1925, upon the application of Frederick C. Jones, of Camden, New Jersey, for an improvement in Spring Motors, errors appearn the printed Speecaton requiring correction. as follows: Page 2a line 96, for the article tl1e, rst occurrence, read Lf/ml; page 4, line 77, 'for the Word heel read wheel; page 6, line 25, Claim 4,

for the misspelled Word c sang read easing; and that the said Letters Patent should loe read With these corrections therein that the same may conform to the record of the ease in the Patent Oce.

Signed and sealed this 27th day of. October, A. D. 1925.

[SEAL] KARL FENNING,

Act/ng Commissioner of Patents. 

